Production of artificial stone



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to l N ('IOATING OR PLASIlC nrosmoN A NITED. STATES SUBSTITUTED FORMlSSlNG coPY.

GRANVILLE M. BREINIG, OF NE\V MILFORD, CONNECTICUT.

;. PRobucT oN 07F ARTlFlClAL STONE.

SPECIFICATION forming part of Letters Patent No. 505,747, dated September 26 1893.

I Application filed 'J'uly 2'7, I892. Serial N o. 441,392. (No specimens.)

To all whom, it may concern:

Be it known'that I, GRANVILLE M. BREINIG, a. citizen of the United States of America, residing at New Milford, in the county of Litchfield and State of Connecticut, have invented a new and useful Improvement in the Composition of Matter for the Product-ion of Artificial Stone Suitable for Floors, Sidewalks, Curbstones,Drains, or other Similar Purposes, of which the following is a specification.

My invention relates also to an improved process for making one of the ingredients used in my composition. 4

The object of my invention is to produce an artificial stone ossessing superior qualities and usefulness and great adaptation as a material for floors sidewalks, curbston drains or other simi ar purposes, a mitting of ard fine surface finish, and possessing great durability-and resistance to t 1 elemen s am ness c.

Hit-$ the best material with which to ru ...and wmw res s t an the bes san ort ebest sand that can be obtained contains decomposed silica, together with impurities of various kinds which have not been of benefit but' detrimental, and the grains of sand have not that angular shape which is desirable. The

ingredients used in my composition are not subject to such objections and in carrying out my invention I employ the ure uartz. rock;cru am .mwmmmlor heavy stone chasers, and then pass the material over ascreen so as to remove therefrom any that maybe fine enough to go through about a mesh that is sixty wires to the square inch. The crushed mass is then passed over another sieve to take nlesh sieve, so that an even clean grade of For preparing the second ingredients of composition, I take a quantity of rock quartz 60 place it in a kiln and bring it tea n almost white h eat, and then draw it 01f into earsfilled. witil watei'. This oalcines the quartz and causesit to fracture more readily. This calcined gu rtz treated as before statedis then placed in a tub about seven feet in diameter with a stone lined bottom, on top of which revolve twolarge stone chasers weighingabout five tons each. These chasers run over the stone bottom and water is run into the tub. 7:.

eled into this tub and in under these chasers 7 5 as they revolve continuously. Wateg is also allowed to flow into this tub Wudusly,

and the material by this process is ground to a certain fineness, and when it gets to that fineness the force of the water carries" it through the wire mesh or sluice bars into a wooden pan about six feet square on the outside of this tub. This pan is also connected with a series of other pans so that the water is continually flowing from the tuband over the various pans. That which is in the first pan is of even fineness and about the size of ordinary s pgl but it contains no marinas that has been carried on by thmeofthe water to the other pans. in the first pan, or the other pans, forms the secondin'gredient of my composition.

For the third ingredient of my composition I use cement l:9 rtland preferred.)

sidewalk, curbing, driveway, drains, &c., I take six parts of thelcrushed uartz of a size between 10 and (i0, and two parts 0 the cald uartz and four parts of cement or We. I then mix t em we 0- get er dry, adding whatever col rin matter may be desired. This then is wet up with water and thoroughly mixed. This forms my therefrom any that may not go through a&

composition as ordinarily used.

"EXAMlNi This calcined sand In making the artificial stone for pavement, 9 5

- For some kinds of work good sand may be substituted in part for each of the above named ingredients with good results, so that less of each ofthe other ingredients ment ion ed may be used.

While I have mentioned proportions I do not confine myself to these exact proportions,

either as to one article or the other; neit 91 confine myself to using an a 10 sine as that may be varied accor ing to re- Tfnirement for specific work.-

The obj sot 0t my using a certain proportion of calcined quartz in connection with the uncalcined is that it will assist more readily in my invention, what GRANVILLE M. BREINIG.

Witnesses:

Tnos. M. STACK, HARRY WELLS. 

